This week, Adam Levine demonstrated his hidden talent for doing musical impersonations on The Tonight Showand a baby elephant discovered the wonder that is a gigantic string of ribbon. Ed Sheeran hopped on the televised live musical bandwagon and dressed up like Little Orphan Annie, and Cookie Monster teamed up with John Oliver and other celebrities to give kids a language lesson. Plus: Showtime released the most revealing teaser yet for Homeland's upcoming fourth season. Check out those clips and more in our weekly roundup of the best online videos:

Homeland teaser: This new teaser for Season 4 of Homeland not only offers us a glimpse at what Carrie (Claire Danes) is up to on the ground in Pakistan, but also features Lorde doing an amazing, haunting cover of Tears for Fears' "Everybody Wants to Rule the World."

W-ORD Channel 7 News with Cookie Monster and John Oliver: FromSesame Street and Mashable comes this "newscast," featuring John Oliver and Cookie Monster explaining some nuances of the English language. Keep an eye out for cameos from Nick Offerman, Al Roker and SNL's Kate McKinnon. (via Tubefilter)

Bojack Horseman auditions for Netflix shows: Last month, Bojack Horsemanbecame the newest entrant into the canon of Netflix original series, including House of Cardsand Orange Is the New Black, and the streaming platform has already renewed the cartoon for a second season. In this bonus video, Bojack (voiced by Will Arnett) auditions for some of the other series. (The crack about OITNB'sLarry is the best.)

Elephant with ribbon: We dare you not to crack a smile at this video of baby elephant Faa Mai discovering just how much fun he can have with a giant piece of blue ribbon. Looks like someone has a new best friend.